My Go Bag for thrift store shopping, what should I add?

I’ve been carrying a small tape measure in my purse for a long time for various uses in thrifting. Lately I’ve been on the lookout for an inexpensive wall clock and found it helpful to have some AAA and AA batteries because stores don’t seem to have any ‘tester’ batteries available but my humongous purse (thrifted!) is getting heavy.

I’ve put all these in a a small (thrifted!) tote to keep in my car since I never know when I’ll pass a thrift store and just have to check it out.

What items should I add?

Bonus tip because I’m not sure it needs a whole other post: BFF has taken thrifting so far that his semi-retirement job is for an estate sale company. I went to a sale with him once and fell in love with a small desk. I asked him if it would fit in his car and discovered that he has memorized the exact interior dimensions of his car’s cargo area, both with and without the rear seats folded down. I scored the desk! When I got home I put the interior measurements of my car in my Notes app because my brain was already full.

EDIT: thanks all for the great ideas!